Spring-tooth cultivator.



A. BRIGDEN.

SPRING TOOTH GULTIVATOE.

APPLICATION FILED NOV. 14, 1912.

1,061,354. Patented May 13, 1913.

2 BEEETE-BHBBT 1.

WITNESSES v INVENTOR COLUMBIA PLANOORAPN C0" WASHINGTON, D. C

ATTO R N EY A. BRIGDEN. SPRING TOOTH GULTIVATOR. APPLIOATION FILED NOV.14.1912

Patented May 13, 1913.

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@294 29 25 26 8 "Tum Wm 30 f ///////////////4s. 7 17 T W17 2/ ////////////////4 INVENTOR 461% ATTORNEY UNITE El ARTHUR BRIG-DEN, 0F ALBERTVILLE, ALABAMA.

SPRING-TOOTH CULTIVATOR.

Application filed November 14, 1912.

To all whom it may concern Be it known that I, ARTHUR BnrennN, a citizen of the United States, residing at Albertville, in the county of Marshall and State of Alabama, have invented a new and useful Spring-Tooth Cultivator, of which the following is a specification.

The invention relates to a spring tooth cultivator.

The object of the present invention is to improve the construction of Cultivators, more especially the means for mounting the spring teeth, and to provide a simple, inexpensive and eflicient tooth supporting bracket adapted to be readily applied to the tooth carrying bars of a cultivator, and capable of permitting the spring teeth to be raised or lowered to fit the ground and to regulate the depth of the teeth, so that the bed may be uniformly cultivated from one side to the other.

A further object of the invention is to provide a tooth supporting bracket of this character, capable of firmly clamping a spring tooth and of preventing the lateral movement, which frequently results from irregularity in the size of the parts due to casting any of the pieces.

With these and other objects in view, the invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction, within the scope of the claims, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings Figure 1 is a plan view of a cultivator, equipped with tooth supporting brackets, constructed in accord ance with this invention. Fig. 2 is an enlarged longitudinal sectional view on the line 2-2 of Fig. 1. Fig. 3 is a transverse sectional view on the line 3-3 of Fig. 2. Fig. 1 is a transverse sectional view on the line 44 of Fig. 2. Fig. 5 is a detail perspective view of one of the tooth supporting brackets. Fig. 6 is a detail perspective view of a spring tooth eye. Fig. 7 is a longitudinal sectional View, the spring tooth being provided with an integral eye.

Like numerals of reference designate cor- Specification of Letters Patent.

latentcd May 13, 191 3.

Serial No. 731,369.

responding parts in all the figures of the drawings.

In the accompanying drawings in which is illustrated the preferred embodiment of the invention, 1 designates a resilient tooth srupporting bracket designed to be constructed of spring steel. or other suitable material, and consisting of spaced approximately U- shaped sides 2 and front and rear top connecting portions 3 and 4t, arranged horizontally and extending across the spaces between the front and rear portions of the sides of the tooth supporting bracket. The approxiimltely U-shaped sides are composed of front and rear vertical portions 5 and (i and bottom connecting portions. The front portions 0 are provided with vertical series of alinecl perforations 7 for the reception of a transverse pivot bolt 8, passing through an eye 9 of a spring tooth 10 and adapted to be arranged in any of the perforations 7 for adjusting the eye 9 and the spring tooth 10 to arrange the same at the desired elevation. The bolt 8 is provided at one end with a head and the other end is threaded for the reception of a nut 1.1, but the front pivot of the spring tooth may be secured in the perfo'ations of the front portions of the sides of the tooth supporting bracket in any other desired manner.

The eye 9, illustrated in the form of the invention shown in Figs/ 1 to (3 inclusive, is constructed separate from the spring tooth 10 and is provided with a shank 12, which is secured to the lower face of the front end of the spring tooth 10 by a short bolt 13. The belt passes through registering perforations of the spring tooth 10 and the shank 12, and it is provided at its upper end with a head and its lower end is threaded for the reception of a nut 1 1, but the eye 9 may be secured to the spring tooth in any other desired manner and, as illustrated in F 7 of the drawings, a spring tooth 15 having an integral eye 16 may be employed. The spring tooth and its eye are of a width to extend across the space between the sides 2 of the bracket 1.

The rear portions 6 of the sides of the tooth supporting bracket are provided with vertical series of alined perforations l7 and 18 for the reception of upper and lower transverse bolts 1.9 and 20, each provided at one end with a head and having its other portion threaded to engage threads of the perforations 18 and also to receive nuts 21 and 22, which serve as lock nuts for securing the bolts in their adjustment. The perforations 17 and 18 are preferably located in rear of the median transverse plane of the rear portions 6 of the sides 2 of the bracket in order to facilitate the clamping of the spring tooth, which is firmly gripped between the resilient sides 2 of the bracket 1. The bolts, which may be arranged in any of the perforations to permit a pivotal adjustment of the spring tooth, are capable of drawing the resilient sides of the tooth supporting bracket firmly in engagement with the side edges of the spring tooth, which is securely gripped and held against lateral movement. By this construction, any irregularity in the size of the spring tooth or the tooth supporting bracket may be readily taken up, and the lateral motion which is often present in casting and other brackets incapable of transverse adjustment is eliminated. The arrangement of the perforations 17 and 18 closer to the rear edges of the vertical portions 6 and to the inner or front edges thereof enables the bolts to exert a pressure on the sides adjacent to the rear edges and a firm gripping or clamping action is assured.

The transverse connecting portions 3 and 4: of the tooth supporting bracket 1 are provided with central openings 23 and 24, consisting of circular bottom portions and squared upper portions and receiving short vertical bolts 25 and 26, which pivotally connect the brackets 1 to transversely disposed front and rear tooth carrying bars 27 and 28. The bolts have rounded heads at their lower ends and are squared at the rectangular portions of the openings 23 and 242 and are rounded beyond the same, the front and rear tooth carrying bars being provided with round perforations 29 and 30 for the reception of the short bolts 25 and 26, the nuts of which engage the upper faces of the bars 27 and 28. The tooth carrying bars 27 and 28, which extend from opposite sides of a cultivator beam 31, are pivoted at their inner ends to the same and are adjusted by braces 32, having their inner and outer ends adjustably connected with the cultivator beam 31 and with the outer ends of the rear tooth carrying bars. As the means for mounting and adjusting the tooth carrying bars does not constitute a portion of the present invention, a detail description thereof is deemed unnecessary.

That is claimed is 1. The combination with a cultivator tooth provided at its front end with an eye, of a tooth supporting bracket provided with resilient compressible sides and having frontand rear perforations, a pivot mounted in the front perforation and passing through the eye of the spring tooth, and a bolt arranged in the rear perforations and adjustably securing and clamping the spring tooth between the sides of the bracket.

2. The combination with a cultivator tooth having an eye, of a tooth supporting bracket provided with spaced resilient compressible sides and having alined front and rear perforations, the rear perforations of one side being threaded, a pivot bolt mounted in the front perforations and. passing through the eye of the cultivator toot-h, and a pair of bolts arranged in the rear perforations and engaging the threads of the same and supporting and adjustably clamping the spring tooth between the sides, said bolts being provided with exterior lock nuts engaging the side of the bracket having the threaded perforations.

3. A tooth supporting bracket composed of spaced resilient approximately U-shaped sides having front and rear upwardly extending portions and bottom connecting portions, the front and rear portions being provided with alined perforations adapted to receive fastening devices for pivoting the cultivator tooth within the bracket and for adjustably clamping the same between the said sides, and front and rear top connecting portlons having openings adapted to receive pivots for connecting the front and rear portions of the bracket to the tooth carrying bars or members of a cultivator.

In testimony, that I claim the foregoing "as my own, I have hereto afliXed my signature in the presence of two witnesses.

ARTHUR BRIGD'EN. lVitnesses E. G. HARRIS, Jr., C. J. l/VALKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

- Washington, D. G. 

